Organic light emitting display device

ABSTRACT

An organic light emitting display device includes: a substrate including pixel areas and a pixel separating area; a plurality of pixels; a plurality of spacers in the pixel separating area and spaced apart from each other; and a touch electrode unit disposed over the plurality of pixels and spacers. The touch electrode unit includes first touch electrodes arranged in a first direction and second touch electrodes arranged in a second direction. The touch electrode unit includes a plurality of touch pattern unit blocks repeatedly arranged. Each touch pattern unit block includes portions of each of neighboring first touch electrodes and portions of each of neighboring second touch electrodes. The spacers of each touch pattern unit block corresponds to a plurality of spacer pattern unit blocks repeatedly arranged. Each spacer pattern unit includes at least one spacer and is smaller than the touch pattern unit block.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefit of Korean PatentApplication No. 10-2017-0041060, filed on Mar. 30, 2017, in the KoreanIntellectual Property Office, the disclosure of which is incorporated byreference in its entirety herein.

BACKGROUND 1. Technical Field

One or more exemplary embodiments of the inventive concept relate to anorganic light emitting display device.

2. Discussion of the Related Art

An organic light emitting display device may include an organiclight-emitting diode (OLED). An OLED is a light emitting diode in whichthe emissive electroluminescent layer is a film of an organic compoundthat emits light in response to an electric current. When the organiclight emitting display device is implemented in a portable manner, thedisplay device may include a touch function. For example, the displaydevice may be configured to sense the location of a finger or a stylusof a user contacting a surface thereof.

The organic light emitting display device may include touch electrodesto support the touch function. An inspection may be performed to verifywhether a defect is present in the touch electrodes. The inspection mayinclude analyzing images of the touch electrodes captured by a camera.

SUMMARY

According to an exemplary embodiment of the inventive concept, there isprovided an organic light emitting display device including: a substrateincluding a plurality of pixel areas and a pixel separating area betweenthe pixel areas; a plurality of pixels corresponding to each of theplurality of pixel areas, each of the pixels including a pixelelectrode, an opposite electrode, and an organic light emitting layerdisposed between the pixel electrode and the opposite electrode; aplurality of spacers disposed in the pixel separating area and spacedapart from each other; and a touch electrode unit disposed over theplurality of pixels and the plurality of spacers. The touch electrodeunit includes first touch electrodes arranged in a first direction andsecond touch electrodes arranged in a second direction substantiallyperpendicular to the first direction. The touch electrode unit includesa plurality of touch pattern unit blocks repeatedly arranged and eachtouch pattern unit block includes portions of each of neighboring firsttouch electrodes and portions of each of neighboring second touchelectrodes. An arrangement of the spacers of each touch pattern unitblock corresponds to a plurality of spacer pattern unit blocksrepeatedly arranged and each spacer pattern unit includes at least onespacer and is smaller than the touch pattern unit block.

According to an embodiment, the plurality of pixels include a pluralityof pixel pattern unit blocks repeatedly arranged, and each pixel patternunit block includes at least a first pixel, a second pixel, and a thirdpixel, and the first pixel, the second pixel, and the third pixel emitlight corresponding to different colors.

According to an embodiment, an arrangement of the pixels of each spacerpattern unit block corresponds to K of the pixel pattern unit blocksarranged in the first direction, and L of the pixel pattern unit blocksarranged in the second direction, where K and L are natural numbers.

According to an embodiment, an arrangement of the pixels of each touchpattern unit block corresponds to M of the pixel pattern unit blocks arearranged in the first direction, and N of the pixel pattern unit blocksarranged in the second direction, where M is a natural number and aninteger multiple of the K, and N is a natural number and an integermultiple of the L.

According to an embodiment, in each pixel pattern unit block, the numberof the third pixels is equal to a sum of the number of the first pixelsand the number of the second pixels.

According to an embodiment, the at least one spacer is located at anintersection of a first virtual line connecting neighboring first pixelsand second pixels, and a second virtual line connecting neighboringthird pixels.

According to an embodiment, the at least one spacer includes a firstspacer adjacent to a corner of each spacer pattern unit block.

According to an embodiment, each spacer pattern unit block furtherincludes a second spacer separated apart from the first spacer in athird direction that forms an acute angle with respect to the firstdirection and the second direction.

According to an embodiment, each touch pattern unit block has a squareshape.

According to an embodiment, each spacer pattern unit block has a squareshape.

According to an exemplary embodiment of the inventive concept, providedis an organic light emitting display device including: a plurality ofpixels, each pixel including a pixel electrode, an opposite electrode,and an organic light emitting layer between the pixel electrode and aopposite electrode; a plurality of spacers disposed between neighboringpixels and spaced apart from each other; and a touch electrode unitdisposed over the plurality of pixels and the plurality of spacers. Thetouch electrode unit includes first touch electrodes arranged in a firstdirection and second touch electrodes arranged in a second directionperpendicular to the first direction. The touch electrode unit includesa plurality of touch pattern unit blocks repeatedly arranged and eachtouch pattern unit block includes portions of each of neighboring firsttouch electrodes and portions of each of neighboring second touchelectrodes. The plurality of spacers includes a plurality of spacerpattern unit blocks repeatedly arranged and each spacer pattern unitblock includes at least one spacer and is smaller than the touch patternunit block.

According to an embodiment, each of the first touch electrodes and eachof the second touch electrodes include wires of a net structure at leastpartially surrounding each of the plurality of pixels.

According to an embodiment, the plurality of spacers overlap the wiresof the first touch electrodes or the wires of the second touchelectrodes.

According to an embodiment, an arrangement of the spacers correspondingto each touch pattern unit block correspond to the arrangement of thespacers according to an A×B array of the spacer pattern unit blocks,where A and B are natural numbers.

According to an embodiment, the plurality of pixels include a pluralityof pixel pattern unit blocks repeatedly arranged, each pixel patternunit block includes at least three pixels that emit light correspondingto different colors, and the arrangement of pixels of each spacerpattern unit block corresponds to K of the pixel pattern unit blocksarranged in the first direction or in the second direction, where K is anatural number.

According to an embodiment, the plurality of pixels include a pluralityof pixel pattern unit blocks repeatedly arranged, each pixel patternunit block includes at least three pixels that emit light correspondingto different colors, and the arrangement of the pixels of each touchpattern unit block corresponds to M of the pixel pattern unit blocksarranged in the first direction or in the second direction, where M is anatural number.

In this embodiment, the plurality of pixels include a first pixel, asecond pixel, and a third pixel that emit light corresponding todifferent colors, and the at least one spacer is located at anintersection of a first virtual line connecting neighboring first pixelsand second pixels, and a second virtual line connecting neighboringthird pixels.

According to an embodiment, the at least one spacer includes a firstspacer adjacent to one corner of each spacer pattern unit block.

According to an embodiment, each spacer pattern unit block furtherincludes a second spacer spaced apart from the first spacer in a thirddirection crossing the first direction and the second direction.

According to an embodiment, each touch pattern unit block and eachspacer pattern unit block have a square shape.

According to an exemplary embodiment of the inventive concept, anorganic light emitting display device includes a substrate including aplurality of pixel areas and a pixel separating area between the pixelareas; a plurality of pixels corresponding to each of the plurality ofpixel areas, each of the pixels including a pixel electrode, an oppositeelectrode, and an organic light emitting layer located between the pixelelectrode and the opposite electrode; a plurality of spacers disposed inthe pixel separating area and spaced apart from each other; and a touchelectrode layer disposed over the plurality of pixels and the pluralityof spacers. The touch electrode layer includes first touch electrodesand second touch electrodes arranged in a first direction, third touchelectrodes and fourth touch electrodes arranged in a second otherdirection, a first connection line connecting the first and second touchelectrodes together, and a second connection line connecting the thirdand fourth touch electrodes together, where the first direction isperpendicular to the second direction.

In an embodiment, a first spacer among the spacers is adjacentlydisposed between a first pixel, a second pixel, a third pixel, and afourth pixel among the pixels, the first pixel emitting a first color,the second pixel emitting a second color, and the third and fourthpixels emitting a third color.

In an embodiment, wherein the first and second pixels are arranged onthe first direction and the third and fourth pixels are arranged in thesecond direction.

BRIEF DESCRIPTION OF THE DRAWINGS

The inventive concept will become apparent and more readily appreciatedfrom the following description of the embodiments thereof, taken inconjunction with the accompanying drawings in which:

FIG. 1 is a plan view of an organic light emitting display deviceaccording to an exemplary embodiment of the present inventive concept.

FIG. 2 is a sectional view taken along the line II-II in FIG. 1.

FIG. 3 is a cross-sectional view of a display unit, a sealing member,and a touch electrode unit formed on the substrate of FIG. 2 accordingto an exemplary embodiment of the present inventive concept.

FIG. 4 is a plan view of the touch electrode unit disposed over thesubstrate.

FIG. 5 is an enlarged plan view of a portion of FIG. 4.

FIG. 6 is a plan view of a portion of an organic light emitting displayaccording to an exemplary embodiment of the present inventive concept.

FIG. 7 is a plan view of one pixel pattern unit block excerpted fromFIG. 6.

FIG. 8 is a plan view of a portion of an organic light emitting displaydevice according to an exemplary embodiment of the present inventiveconcept.

FIG. 9 is a plan view of a portion of an organic light emitting displaydevice according to an exemplary embodiment of the present inventiveconcept.

FIG. 10 is a plan view of a portion of an organic light emitting displaydevice according to an exemplary embodiment of the present inventiveconcept.

FIG. 11 is a plan view of a portion of a touch pattern unit blockaccording to an exemplary embodiment of the present inventive concept.

DETAILED DESCRIPTION

As the inventive concept allows for various changes and numerousembodiments, exemplary embodiments will be illustrated in the drawingsand described in detail in the written description. Effects and featuresof the present disclosure and methods of achieving them will be apparentwith reference to the embodiments described below in detail withreference to the drawings. However, the present disclosure is notlimited to the embodiments described below, but may be implemented invarious forms.

Hereinafter, exemplary embodiments of the present inventive concept willbe described in detail with reference to the accompanying drawings,wherein like reference numerals refer to like or correspondingcomponents throughout the drawings and a duplicate description thereofwill be omitted.

As used herein, the singular forms “a,” “an” and “the” are intended toinclude the plural forms as well, unless the context clearly indicatesotherwise.

When a certain embodiment may be implemented differently, a specificprocess order may be performed differently from the described order. Forexample, two consecutively described processes may be performedsubstantially at the same time or performed in an order opposite to thedescribed order.

FIG. 1 is a plan view of an organic light emitting display device 10according to an exemplary embodiment of the present inventive concept.FIG. 2 is a sectional view taken along the line II-II in FIG. 1.

Referring to FIG. 1, the organic light emitting display device 10includes a display area DA and a non-display area NDA. In the displayarea DA, pixels including display elements such as organic lightemitting diodes (OLEDs) may be arranged to provide a certain image. Thenon-display area NDA is an area which does not provide an image andsurrounds the display area DA. In the non-display area NDA, a scandriver and a data driver which provide electrical signals to be appliedto the pixels in the display area DA, and power lines providing powersuch as a driving voltage and a common voltage may be arranged. The scandriver may apply gate signals to gate lines connected to the pixels andthe data driver may provide data signals to data lines connected to thepixels.

As illustrated in FIG. 2, the organic light emitting display device 10includes a display unit 200 forming the display area DA on a substrate100. The substrate 100 may include various materials such as glass,metal, or plastic such as polyethylene terephthalate (PET),polyethylenenaphthalate (PEN), and polyimide. The display unit 200 mayinclude pixels including OLEDs that are configured to provide a certainimage. In an embodiment, the display unit 200 is covered by a sealingmember 300.

The sealing member 300 may face the substrate 100 with the display unit200 therebetween and protect the display unit 200 from external moistureor oxygen, or the like. In an embodiment, a touch electrode unit 400 islocated on the sealing member 300.

The touch electrode unit 400 may include a plurality of touch electrodeshaving conductivity. For example, the touch electrode unit 400 may be ofa capacitive type. In an embodiment, the touch electrode unit 400outputs coordinates of a location at which an object approaches ortouches, by using a change in capacitance occurring when the object suchas a user's finger or a stylus approaches or touches a surface of thetouch electrode unit 400.

In an embodiment of the inventive concept, an optical functional layer500 is located on the touch electrode unit 400. In an embodiment of theinventive concept, the optical function layer 500 includes a polarizingplate or a polarizer. In an embodiment, the polarizer is an opticalfilter that lets light waves of a specific polarization pass and blockslights waves of other polarizations. In another exemplary embodiment,the optical function layer 500 includes a layer including a black matrixand a color filter. In an embodiment, the black matrix prevents lightfrom passing therethrough. According to another exemplary embodiment,the optical functional layer 500 includes a window member. In anembodiment, the window member is transparent.

FIG. 3 is a cross-sectional view of the display unit 200, the sealingmember 300, and the touch electrode unit 400 formed on the substrate 100of FIG. 2 according to an exemplary embodiment of the present inventiveconcept.

Referring to FIG. 3, the display unit 200 is located on the substrate100. The display unit 200 includes OLEDs 250R, 250B, and 250G providedfor each pixel. The OLEDs 250R, 250B, and 250G may be electricallyconnected to their respective thin film transistors (TFTs) and storagecapacitor (Cst).

In an embodiment, the TFT includes a semiconductor layer 120, a gateelectrode 140 overlapping a portion (channel area) of the semiconductorlayer 120, and a source electrode 160 and a drain electrode 162connected to the semiconductor layer 120. The semiconductor layer 120may include an inorganic semiconductor such as silicon, or an organicsemiconductor or an oxide semiconductor material. The semiconductorlayer 120 may include a source area, a drain area, and a channel arealocated between the source area and the drain area. According to anembodiment, an amorphous silicon layer is formed on the substrate 100,and is crystalized to be a polycrystalline silicon layer, and patterned.In an embodiment, a portion of the polycrystalline silicon layer whichdoes not overlap the gate electrode 140 is doped with impurities byusing a self-aligning mask on the gate electrode 140. As a result, thesemiconductor layer 120 including the source area, the drain area, andthe channel area therebetween may be formed. The gate electrode 140 mayhave a single layer or a multi-layer including at least one of Al, Pt,Pd, Ag, Mg, Au, Ni, Nd, Ir, Cr, Li, Ca, Mo, Ti, and/or W.

A buffer layer 110 for preventing infiltration of impurities may belocated between the semiconductor layer 120 and the substrate 100. Agate insulating layer 130 may be located between the semiconductor layer120 and the gate electrode 140. An interlayer insulating layer 150 maybe located on the gate electrode 140. The buffer layer 110 may includean inorganic material such as silicon oxide (SiO_(x)), silicon nitride(SiN_(x)), silicon oxynitride (SiON), aluminum oxide (Al₂O₃), aluminumnitride (AIN), titanium oxide (TiO₂), or titanium nitride (TiN). Thegate insulating layer 130 may include a material such as SiNx orSiO_(x), and the interlayer insulating layer 150 may be a single layeror a multi-layer including a material such as SiN_(x), SiO_(x), or SiON.

The source electrode 160 and the drain electrode 162 may be located onthe interlayer insulating layer 150 and be connected to the source areaand the drain area of the semiconductor layer 120, respectively.According to an embodiment, the source area and the drain area of thesemiconductor layer 120 may be referred to as a source electrode and adrain electrode, respectively. The source electrode 160 and the drainelectrode 162 may have a single layer or a multi-layer including atleast one of Al, Pt, Pd, Ag, Mg, Au, Ni, Nd, Ir, Cr, Li, Ca, Mo, Ti,and/or W.

The storage capacitor Cst includes a bottom electrode 142 and a topelectrode 164. The bottom electrode 142 (e.g., a lower electrode) mayinclude the same material as the gate electrode 140, and the upperelectrode 164 may include the same material as the source electrode 160or the drain electrode 162. However, the inventive concept is notlimited thereto.

The thin film transistor TFT and the storage capacitor Cst may becovered by a planarization insulating layer 170. The planarizationinsulating layer 170 may include SiO₂, SiN_(x), SiON, Al₂O₃, TiO₂,Ta₂O₅, HfO₂, ZrO₂, BST, or PZT. Alternatively, the planarizationinsulating layer 170 may include an organic insulating material such asa general purpose polymer (PMMA or PS), a polymer derivative having aphenolic group, an acrylic polymer, an imide polymer, an aryletherpolymer, an amide polymer, a fluorine polymer, a p-xylene polymer, avinyl alcohol-based polymer, and blends thereof. Alternatively, theplanarization insulating layer 170 may include both the above-mentionedinorganic insulating material and organic insulating material.

The organic light emitting devices 250R, 250B, and 250G corresponding torespective pixels may be located on the planarization insulating layer170. Each of the organic light emitting devices 250R, 250B, and 250G maybe electrically connected to the thin film transistor TFT via contactholes defined in the planarization insulating layer 170. The organiclight emitting devices 250R, 250B, and 250G emit red color light, bluecolor light, and green color light, respectively.

The red color organic light emitting device 250R includes a pixelelectrode 210, an organic light emitting layer 220R emitting red colorlight, and an opposite electrode 230, and may correspond to a firstpixel emitting red color light. The blue color organic light emittingdevice 250B includes the pixel electrode 210, an organic light emittinglayer 220B emitting blue color light, and the opposite electrode 230,and may correspond to a second pixel emitting blue color light. Thegreen color organic light emitting device 250G include the pixelelectrode 210, an organic light emitting layer 220G emitting green colorlight, and the opposite electrode 230, and may correspond to a thirdpixel emitting green color light. In this specification, it will beunderstood that the first, second, and third pixels represent red color,blue color, and green color sub-pixels, respectively.

The pixel electrode 210 may correspond to each pixel area PA and may bea reflective electrode. The pixel electrode 210 may include a reflectivefilm including Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, or a compoundthereof, and may further include a layer located on the reflective film,including indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide(ZnO), or indium oxide (In₂O₃). For example, the pixel electrode 210 maybe a triple layer of ITO/Ag/ITO.

In an embodiment, the pixel defining layer 180 includes an openingexposing a central portion of the pixel electrode 210 to define thepixel (sub-pixel). In addition, an arc or the like may be prevented fromoccurring at an edge (end) of the pixel electrode 210 by increasing adistance between the edge of the pixel electrode 210 and the oppositeelectrode 230. The pixel defining layer 180 may include an organicinsulating material such as polyimide (PI) or hexamethyldisiloxane(HMDSO).

In an embodiment, a spacer 191 is located on the pixel defining layer180. For example, the spacer 191 may directly contact the pixel defininglayer 180. The spacer 191 may correspond to a pixel separating area DPAlocated between the pixel areas PA. The spacer 191 may prevent orminimize defects of the organic light emitting layers 220R, 220B and220G due to sagging of a mask, by supporting the mask to be used in adeposition process of the organic light emitting layers 220R, 220B and220G to be described below. Alternatively, the spacer 191 may prevent orminimize the Newton-ring phenomenon due to sagging or the like of asealing substrate, by maintaining a gap between the substrate 100 andthe sealing substrate constant, even when external pressure is appliedto the sealing member 300 (for example, a rigid sealing substrate).

The spacer 191 may include the same material as the pixel defininiglayer 180. For example, the spacer 191 may include an organic insulatingmaterial such as PI or HMDSO. The spacer 191 and the pixel defininglayer 180 may be formed together in a same mask process, for example, ina process using a halftone mask.

The red color organic light emitting layer 220R may include afluorescent material or a phosphorescent material that emits red colorvisible light, the blue color organic light emitting layer 220B mayinclude a fluorescent material or a phosphorescent material that emitsblue color visible light, and the green color organic light emittinglayer 220G may include a fluorescent material or a phosphorescentmaterial that emits green color visible light.

In an embodiment, the opposite electrode 230 is a (semi-) transparentelectrode. The opposite electrode 230 may be a layer including Ag, Mg,Al, Yb, Ca, Li, Au or a compound thereof, or a layer including a (semi-)transparent material such as ITO, IZO, ZnO or In₂O₃. According to anembodiment, the opposite electrode 230 includes a metal thin filmincluding Ag or Mg. The opposite electrode 230 may be integrally formedto entirely cover both the pixel area PA and the pixel separating areaDPA.

FIG. 3 illustrates a structure in which the red color, blue color, andgreen color organic light emitting layers 220R, 220B, and 220G arebetween the pixel electrode 210 and the opposite electrode 230 in directcontact with them. However, the inventive concept is not limitedthereto. According to an exemplary embodiment, the red color, bluecolor, and green color organic light emitting layers 220R, 220B, and220G include a first functional layer thereunder and a second functionallayer thereon. Each of the first and/or second functional layers, likethe opposite electrode 230, may be integrally formed to entirely coverboth the pixel area PA and the pixel separating area DPA.

The first functional layer may be a single layer or a multi-layerincluding a hole injection layer (HIL) and/or a hole transport layer(HTL). For example, when the first functional layer includes a polymermaterial, the first functional layer may be a single HTL includingpoly-(3,4)-ethylene-dihydroxythiophene (PEDOT) or polyaniline (PANI).When the first functional layer includes a low molecular weightmaterial, the first functional layer may include the HIL and the HTL.

The second functional layer may include a single layer or a multi-layerincluding an electron transport layer (ETL) and/or an electron injectionlayer (EIL). The second functional layer may be omitted. For example,when the first functional layer and the organic light emitting layers220R, 220B, and 220G include polymer materials, the second functionallayer may be omitted. When the first functional layer and the organiclight emitting layers 220R, 220G, and 220B include low molecular weightmaterials, the second functional layer may be additionally formed forimproving the characteristics of an organic light emitting device. Inthis case, the second functional layer may include the ETL and/or theEIL.

The sealing member 300 may include at least one inorganic layer and atleast one organic layer. In an embodiment, the sealing member 300includes a first inorganic layer 310, a second inorganic layer 330, andan organic layer 320 located between the first inorganic layer 310 andthe second inorganic layer 330. The first and second inorganic layers310 and 330 may include SiO_(x), SiN_(x), or SiON. The organic layer 320may include at least one of polyethylene terephthalate, polyethylenenaphthalate, polycarbonate, polyimide, polyethylene sulfonate,polyoxymethylene, polyarylate, and/or hexamethyldisiloxane. Although notillustrated, other layers such as a capping layer may be located betweenthe first inorganic layer 310 and the opposite electrode 230 as needed.A case is described in which the sealing member 300 includes the firstinorganic layer 310, the organic layer 320, and the second inorganiclayer 330 which are sequentially stacked, according to an embodiment.However, the number of stacking times may be changed such that inorganiclayers and organic layers are alternately stacked. According to anembodiment, a case is described in which the sealing member 300 is athin film sealing film including alternately stacked inorganic layersand organic layers. However, according to another embodiment, thesealing member 300 may be a rigid translucent sealing substrate.

In an embodiment, the touch electrode unit 400 is located on the sealingmember 300 and generates location information in accordance with a touchinput. A structure of the touch electrode unit 400 will be describedbelow with reference to FIGS. 4 and 5.

FIG. 4 is a plan view of the touch electrode unit 400 over the substrate100. FIG. 5 is an enlarged plan view of an excerpt of a portion of FIG.4.

Referring to FIG. 4, the touch electrode unit 400 (e.g., a touchelectrode layer) includes first touch electrodes 410 arranged in a firstdirection and second touch electrodes 420 arranged in a second directioncrossing (e.g. perpendicular to) the first direction.

The first touch electrodes 410 and the second touch electrodes 420 maybe alternately arranged with each other. For example, the first touchelectrodes 410 may be arranged in parallel with each other, with cornersthereof meeting each other, in the first direction, and the second touchelectrodes 420 may be arranged in parallel with each other between thefirst touch electrodes 410, with corners thereof meeting each other, inthe second direction.

In an embodiment, the first touch electrodes 410 arranged in the firstdirection are electrically connected to each other, and the second touchelectrodes 420 arranged in the second direction are electricallyconnected to each other. For example, as illustrated in FIG. 5, thefirst touch electrodes 410 may be electrically connected to each othervia a first connection line 412, and the second touch electrodes 420 maybe electrically connected to each other via a second connection line422.

The first and second touch electrodes 410 and 420 may be located on thesame layer and include the same materials. The second connection line422 connecting the neighboring second touch electrodes 420 may belocated on the same layer as the second touch electrodes 420 and includethe same material as the second touch electrodes 420. In an embodiment,the second touch electrodes 420 and the second connection line 422 areintegrally formed, and the first touch electrodes 410 are electricallyconnected to each other via the first connection line 412 thereon withan insulating layer (not illustrated) therebetween. In an embodiment, aninsulating layer is located between a first connection line 412 and anoverlapping second connection line 422 to prevent them from contactingone another. The first connection line 412 may be connected torespective first touch electrodes 410 via contact holes CNT penetratingthe insulating layer. The first and second touch electrodes 410 and 420,and the first and second connection lines 412 and 422 may include atransparent conductive layer such as ITO, IZO, or ZnO, or may include a(semi-)transparent metal layer.

In an embodiment, columns of the first touch electrodes 410 in the firstdirection and rows of the second touch electrodes 420 in the seconddirection are respectively connected to sensing lines 430 and 440, asillustrated in FIG. 4. Signals obtained via the sensing lines 430 and440 may be provided via a pad 450 to a circuit unit (not illustrated)including a location detection circuit. The location detection circuitmay analyze voltages on the sensing lines 430 and 440 to detect thelocation at which a user touched the touch electrode unit 400. In anembodiment, the touch electrodes 410 and 420 are capacitive sensors.

The touch electrode unit 400 may be formed in a repetitive arrangementof certain touch pattern unit blocks UB1, as illustrated in FIGS. 4 and5. The touch pattern unit block UB1 may be a virtual unit block having acertain area including at least portions of neighboring first touchelectrodes 410 and at least portions of neighboring second touchelectrodes 420, and may be understood as a minimum repetitive unit ofarray patterns of the first and second touch electrodes 410 and 420.Alternatively, the touch pattern unit block UB1 may be understood as aminimum unit of image capturing for defect inspection of the touchelectrode unit 400. The defect of the touch electrode unit 400 may bedetected by capturing the image corresponding to the touch pattern unitblock UB1 for each area and comparing images. In this case, the minimumunit of image capture for defect inspection may correspond to the touchpattern unit block UB1.

In an embodiment, a shape of the touch pattern unit block UB1 is aquadrangle, for example, a square. For example, the touch pattern unitblock UB1 may be a square having a length of less than about 5 mm in thefirst and second directions. When the touch electrode unit 400 is formedin the repetitive arrangement of square touch pattern unit blocks UB1having a certain area while including a portion of the first touchelectrodes 410 and a portion of the second touch electrodes 420, thelocation detection may be executed at a relatively fast response speedand the accuracy of the location detection may be improved.

FIG. 6 is a plan view of a portion of the organic light emitting displaydevice 10 according to an exemplary embodiment of the present inventiveconcept and illustrates an arrangement of the first and second touchelectrodes 410 and 420, the spacers 191, and first, second, and thirdpixels R, G, and B. FIG. 7 is a plan view of one pixel pattern unitblock excerpted from FIG. 6.

As shown in FIG. 6, the spacers 191 and the first, second, and thirdpixels R, B, and G included in the organic light emitting display device10 may be arranged by a certain rule.

An arrangement of the spacers 191 included in the organic light emittingdisplay device 10 will be described below.

The spacers 191 of the organic light emitting display device include aplurality of spacer pattern unit blocks UB2 repeatedly arranged. Thespacers 191 may be formed in a repetitive arrangement of spacer patternunit blocks UB2. The spacer pattern unit block UB2 may be a virtual unitblock having a certain area including at least one spacer 191 and may beunderstood as a minimum repetitive unit of the arrangement pattern ofthe spacers 191 included in the organic light emitting display device10.

At least one spacer 191 of the spacer pattern unit block UB2 may bearranged at a particular location in the spacer pattern unit block UB2.FIG. 6 illustrates an embodiment where the spacer pattern unit block UB2includes one spacer 191 and the one spacer 191 is adjacent to one cornerof the spacer pattern unit block UB2.

The spacer 191 may be located between adjacent pixels, as illustrated inthe enlarged view of FIG. 6. For example, the spacer 191 may be locatedat a crossing point of a first virtual line VL1 connecting neighboringfirst and second pixels R and B, and a second virtual line VL2connecting neighboring third pixels G. For example, the spacer 191 maybe adjacently located between first and second pixels R and B and a pairof third pixels G.

In an embodiment, the spacer pattern unit block UB2 is a virtual unitblock having a smaller size than the touch pattern unit block UB1, andeach touch pattern unit block UB1 corresponds to the repetitivearrangement of the spacer pattern unit blocks UB2. For example, thearrangement of the spacers 191 of each touch pattern unit block UB1 maybe the same as the arrangement of the spacers 191 of the spacer patternunit blocks UB2 repeatedly arranged, as illustrated in FIG. 6.

For example, when each touch pattern unit block UB1 corresponds to thearrangement of the spacer pattern unit blocks UB2 in an A×B array (A andB are natural numbers), the arrangement pattern of the spacers 191corresponding to each touch pattern unit block UB1 may correspond to thearrangement pattern of the spacers 191 when the spacer pattern unitblocks UB2 are arranged in the A×B array. In the present specification,“the spacer pattern unit blocks UB2 are arranged in the A×B array” maydenote “a matrix array in which a number A of the spacer pattern unitblocks UB2 are arranged in the first direction and a number B of thespacer pattern unit blocks UB2 are arranged in the second direction”.When the touch pattern unit block UB1 is a square and the spacer patternunit block UB2 is a square, the above-described A and B have the samevalues.

When the arrangement of the spacers 191 corresponding to each touchpattern unit block UB1 does not correspond to the repetitive arrangementof the spacer pattern unit blocks UB2, the arrangements of the spacers191 of each touch pattern unit block UB1 will be different from eachother. For example, an arrangement pattern of the spacers 191 in any oneof the neighboring touch pattern unit blocks UB1s may be different fromthe arrangement pattern of the spacers 191 in the other one of theneighboring touch pattern unit blocks UB1s. A defect inspection of thetouch electrode unit 400 (refer to FIG. 2) may be performed by capturingan image for each touch pattern unit block UB1 and comparing thecaptured images with one another or with a reference image. When thearrangement patterns of the spacers 191 are different in each touchpattern unit block UB1, interference fringes due to the spacers 191 maybe different from each other and the images may be distorted. Thus, itmay be impossible to detect the defect of the touch electrode unit 400.However, according to an embodiment of the present inventive concept,since the arrangement of the spacers 191 of each touch pattern unitblock UB1 corresponds to the repetitive arrangement of the spacerpattern unit blocks UB2 including the spacer 191 at particular location,the arrangement of the spacers 191 may be the same for each touchpattern unit block UB1, and problems due to the interference describedabove at the defect inspection of the touch electrode unit 400 may beprevented or reduced.

An arrangement of the first, second, and third pixels R, B, and Gincluded in the organic light emitting display device 10 will bedescribed below.

The pixels of the organic light emitting display device 10, for example,the first, second, and third pixels R, B, and G, may be formed in arepetitive arrangement of certain pixel pattern unit blocks UB3s. Thepixel pattern unit block UB3 may be a virtual unit block having acertain area including the first pixel R, the second pixel B, and thethird pixel G. It may be understood that the pixel pattern unit blockUB3 corresponds to the minimum repetitive unit of the arrangementpattern of pixels included in the organic light emitting display device10. In an embodiment, the pixel pattern unit block UB3 has a squareshape.

In an embodiment, the pixel pattern unit block UB3 includes the first,second, and third pixels R, B, and G, and the sum of the numbers of thefirst and second pixels R and B is the same as the number of the thirdpixels G. FIGS. 6 and 7 illustrate the pixel pattern unit block UB3including two first pixels R, two second pixels B, and four third pixelsG.

The first, second, and third pixels R, B, and G may be at particularlocations in the pixel pattern unit block UB3. As illustrated in FIG. 7,the first pixel R and the second pixel B may be respectively placed atvertices of a first virtual rectangle VSQ1 having one of the thirdpixels G as a center point. For example, the first pixels R may berespectively located at opposite vertices of a first virtual rectangleVSQ1 with the third pixel G therebetween in a diagonal direction. Thesecond pixels B may be respectively located at opposite vertices of thefirst virtual rectangle VSQ1 with the third pixel G therebetween in thediagonal direction. The third pixels G may be respectively located atopposite vertices of the second virtual rectangle VSQ2 centering on apixel (the first pixel or the second pixel) at any one vertex of thefirst virtual rectangle VSQ1.

In an embodiment, the size of the first virtual rectangle VSQ1 is thesame as that of the second virtual rectangle VSQ2. Accordingly, thedistances (the shortest distances) between the neighboring first andsecond pixels R and B in the first and second directions may be equal toeach other, and the distances (the shortest distances) between theneighboring third pixels G in the first and second directions may beequal to each other. In an embodiment, a shortest distance dl betweenthe first pixel R and the third pixel G, and a shortest distance d2between the second pixel B and the third pixel G are equal to eachother, but smaller than a shortest distance d3 between the first pixel Rand the second pixel B.

In an embodiment, the pixel pattern unit block UB3 is a virtual unitblock having a smaller size than the touch pattern unit block UB1, andeach touch pattern unit block UB1 may correspond to the repetitivearrangement of the pixel pattern unit block UB3. For example, thearrangement of the pixels corresponding to each touch pattern unit blockUB1 may correspond to the repetitive arrangement of the pixel patternunit blocks UB3s as illustrated in FIG. 6.

In an embodiment, the size (area) of each touch pattern unit block UB1corresponds to the size (area) of a set of pixel pattern unit blocksUB3s arranged in an M×N array (M and N are natural numbers), and thearrangement pattern of the pixels of each touch pattern unit block UB1correspond to the arrangement pattern of the pixels when the pixelpattern unit blocks UB3s are arranged in the M×N array (M and N may bethe same numbers or different numbers).

In an embodiment, the pixel pattern unit block UB3 is a virtual unitblock having a smaller size than the spacer pattern unit block UB2. Eachspacer pattern unit block UB2 may correspond to the repetitivearrangement of the pixel pattern unit blocks UB3s. For example, thearrangement of the pixels of each spacer pattern unit block UB2 maycorrespond to the repetitive arrangement of the pixel pattern unitblocks UB3s.

In an embodiment, the size (area) of each spacer pattern unit block UB2corresponds to the size (area) of a set of pixel pattern unit blocksUB3s arranged in a K×L array (K and L are natural numbers). In thiscase, the arrangement pattern of the pixels of each spacer pattern unitblock UB2 may correspond to the arrangement pattern of the pixels whenthe pixel pattern unit blocks UB3s are arranged in the K×L array (K andL are natural numbers, and K and L may be the same numbers or differentnumbers). In FIG. 6, each spacer pattern unit block UB2 is illustratedas corresponding to a 3×3 array of the pixel pattern unit block UB3, asan example.

From an aspect of the arrangement of the spacers 191, the touch patternunit block UB1 may correspond to the repetitive arrangement of thespacer pattern unit blocks UB2 as described above. In an embodiment,when the touch pattern unit block UB1 and the spacer pattern unit blockUB2 are respectively squares, the arrangement of the spacers 191 in eachtouch pattern unit block UB1 may correspond to arrangement of thespacers 191 in the spacer pattern unit blocks UB2 when the spacerpattern unit blocks UB2 are arranged in, for example, an array of 15×15,or 20×20, or the like.

Similarly, from an aspect of pixel arrangement, the touch pattern unitblock UB1 and the spacer pattern unit block UB2 may correspond to therepetitive arrangement of the pixel pattern unit blocks UB3s. In anembodiment, when each spacer pattern unit block UB2 corresponds to a 3×3array of the pixel pattern unit blocks UB3s and each touch pattern unitblock UB1 corresponds to a 15×15 array of the spacer pattern unit blocksUB2, the arrangement of the pixels of each touch pattern unit block UB1may correspond to the arrangement of the pixels when the pixel patternunit blocks UB3s are arranged in a 45×45 array.

FIG. 8 is a plan view of a portion of the organic light emitting displaydevice according to another exemplary embodiment of the presentinventive concept, and illustrates arrangements of the first and secondtouch electrodes 410 and 420, the first and second spacers 191 and 192,and the first, second, and third pixels R, B, and G. Since aconfiguration of the touch pattern unit block UB1 of FIG. 8 is similarto that described above with reference to FIGS. 6 and 7, differenceswill be mainly described below.

Referring to FIG. 8, the spacer pattern unit block UB2 may include aplurality of spacers, for example, a first spacer 191 and a secondspacer 192.

The first spacer 191 may be placed adjacent to one corner of the spacerpattern unit block UB2 as described above with reference to FIG. 6. Inan embodiment, the second spacer 192 is spaced apart from the firstspacers 191 by a certain distance. For example, the first spacer 191 andthe second spacer 192 may be spaced apart from each other along a thirdvirtual line VL3 extending in a third direction. The second spacer 192may be placed adjacent to other corner of the spacer pattern unit blockUB2 in the third direction. The third direction may be in an acute anglewith respect to the first direction and the second direction, and maycorrespond to a diagonal direction of the spacer pattern unit block UB2.

Referring to an enlarged view in FIG. 8, the second spacer 192, like thefirst spacer 191, is placed at a point where the first virtual line VL1connecting the neighboring first and second pixels R and B, and thesecond virtual line VL2 connecting the neighboring third pixels G crosseach other.

FIG. 9 is a plan view of a portion of the organic light emitting displaydevice according to another exemplary embodiment of the presentinventive concept, and illustrates arrangements of the first and secondtouch electrodes 410 and 420, the first and second spacers 191 and 192,and the first, second, and third pixels R, B, and G. Since aconfiguration of the touch pattern unit block UB1 of FIG. 9 is similarto that described above with reference to FIGS. 6 and 7, differenceswill be mainly described below.

The pixel arrangement of the spacer pattern unit block UB2 may includethe repetitive arrangement of the pixel pattern unit blocks UB3s. Forexample, the pixel arrangement of the spacer pattern unit block UB2 maycorrespond to that of a 2×2 array of the pixel pattern unit blocks UB3sas illustrated in FIG. 9. The first and second spacers 191 and 192 maybe arranged in each spacer pattern unit block UB2, and the first andsecond spacers 191 and 192 may be arranged along the third virtual lineVL3 in the third direction as described above with reference to FIG. 8.

FIG. 10 is a plan view of a portion of the organic light emittingdisplay device according to an exemplary embodiment of the presentinventive concept, and illustrates arrangements of the first and secondtouch electrodes, spacers, and pixels. Since a configuration of thetouch pattern unit block UB1 of FIG. 10 is similar to that describedabove with reference to FIGS. 6 and 7, differences will be mainlydescribed below.

Referring to FIG. 10, the spacer pattern unit block UB2 is smaller thanthe touch electrode unit block UB1, but is the same size as the pixelpattern unit block UB3. For example, the spacer pattern unit block UB2and the pixel pattern unit block UB3 may be substantially the same unitblocks.

FIG. 11 is a plan view of a portion of the touch pattern unit block UB1according to an exemplary embodiment of the present inventive concept.FIG. 11 may be understood as an enlarged view of a portion where thefirst touch electrode 410 and the second touch electrode 420 intersecteach other in FIG. 8.

Referring to FIG. 11, the first and second spacers 191 and 192 arelocated between the first, second, and third pixels R, B, and G. Thespacer arrangement of the organic light emitting display device maycorrespond to the repetitive arrangement of the spacer pattern unitblocks UB2 including the first and second spacers 191 and 192 which arespaced apart from each other in the third direction. The pixelarrangement of the organic light emitting display device may correspondto the repetitive arrangement of the pixel pattern unit blocks UB3sdescribed above with reference to FIG. 7.

The first touch electrodes 410 are spaced apart from each other in thefirst direction and are electrically connected to each other via thefirst connection line 412. The second touch electrodes 420 are arrangedin the second direction and are electrically connected to each other viathe second connection line 212 between the neighboring second touchelectrodes 420. The first connection line 412 may be placed on the firsttouch electrodes 410 with an insulating layer therebetween, and mayelectrically connect the first touch electrodes 410 via contact holespassing through the insulation layer. The second connection line 422 maybe placed on a same layer as the second touch electrodes 420 andelectrically connect the second touch electrodes 420 as described above.

In an embodiment, each of the first and second touch electrodes 410 and420 include wires formed to at least partially surround the firstthrough third pixels R, B, and G. The wires may have a net structure inwhich they are connected to each other but do not overlap the firstthrough third pixels R, B, and G. The wires of each of the first andsecond touch electrodes 410 and 420 may at least partially surround eachpixel.

In an embodiment, the wires of a first touch electrode 410 includesfirst wires that are parallel to one another that are connected to oneanother via second wires that are parallel to one another andperpendicular to the first wires. In an embodiment, the wires of asecond touch electrode 420 include third wires that are parallel to oneanother that are connected to one another via fourth wires that areparallel to one another and perpendicular to the third wires. In anembodiment, the first wires are perpendicular to the third wires. In anembodiment, a first connection line 412 has an L shape (or a V shape)that connects the wires of a pair of first touch electrodes 410together. In an embodiment, the L shape (or V shape) overlaps a portionof a second touch electrode 420. In an embodiment, the pair of firsttouch electrodes 410 are connected together via a pair of the L shaped(or V shaped) connection lines, and the pair of second touch electrodes420 are connected together via the second connection line 422. In anembodiment, the first L shape (or V shape) of the pair of L shapesoverlaps a portion of a second touch electrode 420 of the pair of secondtouch electrodes 420 and the second L shape (or V shape) of the pair ofL shapes (or V shapes) overlaps a portion of another adjacent secondtouch electrode 420 of the pair of electrodes 420.

Although the first and second touch electrodes 410 and 420 includetransparent electrodes such as ITO, the transmittance may be less thanabout 100%. Thus, when the first, second, and third pixels R, B, and Goverlap the wires of the first and second touch electrodes 410 and 420,intensity of light of the red color, blue color, and green color,respectively emitted from the first, second, and third pixels R, B, andG may be reduced while the light passes through the wires. However,according to an embodiment of the present inventive concept, each of thefirst and second touch electrodes 410 and 420 have openings OPcorresponding to the first, second, and third pixels R, B and G, and areformed in a net structure which at least partially surrounds the first,second, and third pixels R, B, and G. Thus, a problem of reduction inluminous efficiency due to the first and second touch electrodes 410 and420 may be prevented.

The first and second connection lines 412 and 422 may have the samestructure as the first and second touch electrodes 410 and 420. Forexample, each of the first and second connection lines 412 and 422 mayhave a net structure which at least partially surrounds each of thefirst, second, and third pixels R, B, and G, and may include openings OPexposing the first, second, and third pixels R, B, and G.

As described above, the first and second touch electrodes 410 and 420,and the first and second connection lines 412 and 422 may have a wirestructure which at least partially surrounds the first, second, andthird pixels R, B and G. Thus, the wires, and the first and secondspacers 191 and 192 may overlap each other in a non-pixel area.

As described above, the first and second touch electrodes 410 and 420may include transparent electrodes such as ITO. However, the inventiveconcept is not limited thereto. In another embodiment of the inventiveconcept, the first and second touch electrodes 410 and 420, and thefirst and second connection lines 412 and 422 include metal such as Ti,and/or Al.

Even when the organic light emitting display device as a display devicehaving flexibility is bent or curled around a certain axis as thecenter, since the first and second touch electrodes 410 and 420 have thenet structure as described above, broken or damaged wires may beprevented or reduced.

While one or more embodiments of the inventive concept have beendescribed with reference to the figures, it will be understood by thoseof ordinary skill in the art that various changes in form and detailsmay be made therein without departing from the spirit and scope of theinventive concept.

What is claimed is:
 1. An organic light emitting display devicecomprising: a substrate including a plurality of pixel areas and a pixelseparating area between the pixel areas; a plurality of pixelscorresponding to each of the plurality of pixel. areas, each of thepixels including a pixel electrode, an opposite electrode, and anorganic light emitting layer disposed between the pixel electrode andthe opposite electrode; a plurality of spacers disposed in the pixelseparating area and spaced apart from each other; and a touch electrodeunit disposed over the plurality of pixels and the plurality of spacers,the touch electrode unit including first touch electrodes arranged in afirst direction and second touch electrodes arranged in a seconddirection perpendicular to the first direction, wherein: the touchelectrode unit includes a plurality of touch pattern unit blocksrepeatedly arranged and each touch pattern unit block includes portionsof each of neighboring first touch electrodes and portions of each ofneighboring second touch electrodes; and an arrangement of the spacersof each touch pattern unit block corresponds to a plurality of spacerpattern unit blocks repeatedly arranged and each spacer pattern unitblock includes at least one spacer and is smaller than the touch patternunit block, wherein the plurality of pixels includes a plurality ofpixel pattern unit blocks repeatedly arranged, each pixel pattern unitblock includes at least a first pixel, a second pixel, and a third pixelthat emit light corresponding to different colors, and wherein anarrangement of the pixels of each spacer pattern unit block correspondsto K of the pixel pattern unit blocks arranged in the first direction,and L of the pixel pattern unit blocks arranged in the second direction,where K and L are natural numbers, wherein an arrangement of the pixelsof each touch pattern unit block corresponds to M of the K of the pixelpattern unit blocks arranged in the first direction, and N of the pixelpattern unit blocks arranged in the second direction, where M is anatural number and an integer multiple of the K, and N is a naturalnumber and an integer multiple of the L.
 2. The organic light emittingdisplay device of claim 1, wherein, in each pixel pattern unit block,the number of the third pixels is equal to a sum of the number of thefirst pixels and the number of the second pixels.
 3. The organic lightemitting display device of claim 1, wherein the at least one spacer islocated at an intersection of a first virtual line connectingneighboring first pixels and second pixels, and a second virtual lineconnecting neighboring third pixels.
 4. The organic light emittingdisplay device of claim 1, wherein the at least one spacer comprises afirst spacer adjacent to a corner of each spacer pattern unit block. 5.The organic light emitting display device of claim 4, wherein eachspacer pattern unit block further comprises a second spacer separatedapart from the first spacer in a third direction that forms an acuteangle with respect to the first direction and the second direction. 6.The organic light emitting display device of claim 1, wherein each touchpattern unit block has a square shape.
 7. The organic light emittingdisplay device of claim 1, wherein each spacer pattern unit block has asquare shape.
 8. An organic light emitting display device comprising: aplurality of pixels, each pixel including a pixel electrode, an oppositeelectrode, and an organic light emitting layer located between the pixelelectrode and the opposite electrode; a plurality of spacers disposedbetween. neighboring pixels and spaced apart from each other; and atouch electrode unit disposed over the plurality of pixels and theplurality of spacers, the touch electrode unit including first touchelectrodes arranged in a first direction and second touch electrodesarranged in a second direction substantially perpendicular to the firstdirection, wherein: the touch electrode unit includes a plurality oftouch pattern unit blocks repeatedly arranged and each touch patternunit block includes portions of each of neighboring first touchelectrodes and portions of each of neighboring second touch electrodes;and the plurality of spacers includes a plurality of spacer pattern unitblocks repeatedly arranged and each spacer pattern unit block includesat least one spacer and is smaller than the touch pattern unit block,wherein the plurality of spacer pattern unit blocks includes: a firsttouch pattern unit block including a first spacer that is located in anintersection of meshed lines of one of the first touch electrodes, and asecond pattern unit block including a second spacer that is located inan intersecion of meshed lines of one of the second touch electrodes. 9.The organic light emitting display device of claim 8, wherein each ofthe first touch electrodes and each of the second touch electrodesinclude wires of a net structure at least partially surrounding each ofthe plurality of pixels.
 10. The organic light emitting display deviceof claim 9, wherein the plurality of spacers overlap the wires of thefirst touch electrodes or the wires of the second touch electrodes. 11.The organic light emitting display device of claim 8, wherein anarrangement of the spacers corresponding to each touch pattern unitblock corresponds to the arrangement of the spacers according to an A×Barray of the spacer pattern unit blocks, where A and B are naturalnumbers.
 12. The organic light emitting display device of claim 8,wherein the plurality of pixels includes a plurality of pixel patternunit blocks repeatedly arranged, each pixel pattern unit block includesat least three pixels that emit light corresponding to different colors,and the arrangement of pixels of each spacer pattern unit blockcorresponds to K of the pixel pattern unit blocks arranged in the firstdirection or in the second direction, where K is a natural number. 13.The organic light emitting display device of claim 8, wherein theplurality of pixels includes a plurality of pixel pattern unit blocksrepeatedly arranged, each pixel pattern unit block includes at leastthree pixels that emit light corresponding to different colors, and thearrangement of the pixels of each touch pattern unit block correspondsto M of the pixel pattern unit blocks arranged in the first direction orin the second direction, where M is a natural number.
 14. The organiclight emitting display device of claim 8, wherein the plurality ofpixels includes a first pixel, a second pixel, and a third pixel thatemit light corresponding to different colors, and the at least onespacer is located at an intersection of a first virtual line connectingneighboring first pixels and second pixels, and a second virtual lineconnecting neighboring third pixels.
 15. The organic light emittingdisplay device of claim 14, wherein the at least one spacer comprises afirst spacer adjacent to one corner of each spacer pattern unit block.16. The organic light emitting display device of claim 15, wherein eachspacer pattern unit block further comprises a second spacer spaced apartfrom the first spacer in a third direction crossing the first directionand the second direction.
 17. The organic light emitting display deviceof claim 8, wherein each touch pattern unit block and each spacerpattern unit block have a square shape.